Bhagavad Gita 12.14 Chapter 12, Verse 14

सन्तुष्टः सततं योगी यतात्मा दृढनिश्चयः ।
मय्यर्पितमनोबुद्धिर्यो मद्भक्तः स मे प्रियः ॥१२.१४॥

santuṣṭaḥ satataṃ yogī yatātmā dṛḍhaniścayaḥ
mayyarpitamanobuddhiryo madbhaktaḥ sa me priyaḥ

Meaning

ever content, disciplined, self-controlled, of firm resolve, with mind and intellect dedicated to me — such a devotee is dear to me.

Newly written by Bhajan Dhun — scholarly review in progress.

Reference: Bhagavad Gita 12.14 (Chapter 12, The Yoga of Devotion (Bhakti Yoga), Verse 14)